The genuine SDHelper.dll file is a software component of Spybot - Search & Destroy by Safer-Networking.
SDHelper.dll is a DLL (Dynamic Link Library) file that belongs to Spybot - Search & Destroy, a program that scans and removes spyware and adware from computers running Windows. DLL files store data, code and resources needed by one or more programs in order to function correctly. This is not a critical Windows component and should be removed if known to cause problems. Removing this file may cause problems while running LogMeIn products. Spybot - Search & Destroy is a freeware, full fledged security program that removes malicious programs and protects systems from online threats while providing live protection from viruses, trojans, malware, etc. The program also features a Boot CD creator, a registry repair tool, startup tools, command line parameters, etc. Spybot - Search & Destroy was created by Patrick Michael Kolla in 2000 while he was still a software engineering student. Safer-Networking Limited is an Irish company that was founded by Patrick Michael Kolla in 2000 to develop and distribute his program, Spybot - Search & Destroy. The company is currently headquartered in Wicklow, Ireland. The company is financially supported by donations from people are over the world.
SDHelper stands for Spybot Search & Destroy Helper File
SDHelper.dll is a browser extension for Internet Explorer. This add-on enables several additional functions for Internet Explorer. You can disable it through the Extras menu (key combination Alt + X) under Manage Add-ons. The following paragraph provides more information about SBSD IE Protection.
The process known as SBSD IE Protection or Blocks URLs that could install spyware, malware etc or Bad download blocker or Spybot - Search & Destroy belongs to software Spybot - Search & Destroy (version 2) or Internet Explorer integration or Blocks URLs that could install spyware, malware etc or JaSMiN 3D Color Changer (version 3000) by Safer Networking (security.kolla.de).
Description: SDHelper.dll is not essential for the Windows OS and causes relatively few problems. SDHelper.dll is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\ or in a subfolder of the user's profile folder or in a subfolder of the user's "Documents" folder—usually C:\Program Files\Spybot - Search & Destroy\.
Known file sizes on Windows 10/8/7/XP are 1,879,896 bytes (71% of all occurrences), 3,214,392 bytes and 15 more variants.
This .dll file is a Browser Helper Object (BHO) that runs automatically every time you start your web browser. BHOs are not stopped by personal firewalls, because they are identified by the firewall as part of the browser itself. BHOs are often used by adware and spyware. IDs used by this BHO include 53707962-6F74-2D53-2644-206D7942484F. The program has no visible window. It is able to monitor web browsers. SDHelper.dll is not a Windows core file. There is no detailed description of this service. The file is a Verisign signed file. SDHelper.dll is digitally signed. SDHelper.dll is able to monitor applications and record keyboard and mouse inputs. Therefore the technical security rating is 48% dangerous, however you should also read the user reviews.
Recommended: Identify SDHelper.dll related errors
External information from Tony Klein:
Important: Some malware camouflages itself as SDHelper.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the SDHelper.dll process on your PC to see if it is a threat. If SBSD IE Protection has changed your browser's search engine and start page, you can recover your browser's default settings as follows:Reset default browser settings for Internet-Explorer ▾
The following programs have also been shown useful for a deeper analysis: ASecurity Task Manager examines the active SDHelper process on your computer and clearly tells you what it is doing. Malwarebytes' well-known Banti-malware tool tells you if the SDHelper.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.
A clean and tidy computer is the key requirement for avoiding PC trouble. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.